Number of terms in 8th derivative of a function composed with itself n times.

Terms

a(0) =1a(1) =22a(2) =129a(3) =468a(4) =1309a(5) =3101a(6) =6539a(7) =12644a(8) =22857a(9) =39148a(10) =64141a(11) =101256a(12) =154869a(13) =230491a(14) =334967a(15) =476696a(16) =665873a(17) =914754a(18) =1237945a(19) =1652716a(20) =2179341a(21) =2841465a(22) =3666499a(23) =4686044a(24) =5936345a(25) =7458776a(26) =9300357a(27) =11514304a(28) =14160613a(29) =17306679